Cisco WAN :: 1841 - Public IP Address Behind Router
Mar 8, 2012
I'm really bad on networking so I have a question about NAT. I got two public IP addresses from my ISP: 92.x.x.252 - 92.x.x.254. 92.x.x.254 is configured as secondary on external interface and clients will use it two connect (vpn) it from outside through cisco 1841 to zywall p1 with wan ip address 92.x.x.253. Is this configuration (look at picture) allowed? How can I route traffic from 92.x.x.254 to zywall p1, if posible?
Am having an issue with my cisco 1841. I recently brought some IP Publics. Now that i need them i just can't use them, I don't know much about routers but till now have successfully manage to do some stuffs with the router after googling ,OK we already have some other ip publics and when i look at the config file i can see something like this:
I have a public IP and I want to be able to view my three systems connected to a linksys router from the internet. How can configure the router to see three systems with just one Public IP address whenever I am on the internet?
I got 1 public IP for router and 16 Public IP's for NAT from ISP. Both router IP in one range and the NAT IP's are in different range. I want to use 1 NAT public IP for one of my windows server.Am using cisco 1841 router, in which I ve configured the public IP provided by the ISP for router.
I have a Thompson ST546 Router and I want to give it a public ip address and give two servers behind it public ip addresses as well.Now I am having great trouble getting this set in the web interface.
My router IP address is 91.85.232.65 with .66 and .67 will be the two servers. What is the subnet for these ips? Is it 255.255.255.248?
I have assigned my server the public address but if I try to ping it I am getting no response as if the ip is only a local address. My server is windows server 2008, is there a setting to turn ping on/off that I might have missed? I know the server is pingable internally.
Just to make it clear my ISP has assigned me IPs x.65 to x.70 for my use
I am trying to figure out how this works. I have an ISP device that connects to my 1841. ISP and fa0/0 hold the /30 WAN addresses. Fa0/1 hold one of the public IPs, lets say 1.1.1.1/29. Then the outside interface of the ASA holds 1.1.1.2/29. Now I have two routes in the 1841, one for default route going back to the ISP device, and a route for the 1.1.1.0/29 network going to the ASA.Now I have 4 more publics I can use 1.1.1.3 - 6. I do not want to assign these IPs to the servers, but yet just NAT them. I know this is possible, but cant figureI took an internal host and did a one to one static NAT from private to public. Packet tracer says my NAT rules are ok. Allowed all IP traffic for testing and still can't ping the server.
I've got an existing Cisco 1841 connecting to a 10Mbps Internet Leased line. With my current setup I've configured PAT for internet access for my users, and we also have some servers on site which are assigned public ip addresses, these can be accessed from the internet. Now we have procured a Cisco 1921 ISR to replace the old 1841, when I connect the 1921 with an identical configuration in place of the old router, 2 things happen.
1) The users accessing the net via the nat are able to work without any inconvenience (good)
2) My servers which have public IP addresses are unable to reach the internet and subsequently I am unable to reach them via the internet (very bad)
I have noticed that after the new Firmware Update, the EA4500 will not change to a new public address. I have check my logs and my IP Address is the same going back to a 03/25/2012. I changed my router back to my old E4200V1 and it changes to a new addresses when the old one expires.
i am using a Cisco 1841 with subinterfaces instead (NAT on a stick).From the internet i can access services on public IP being hosted in LAN2. But when i try to access the same services on the same public IPs but sitting on LAN1, it does not work.
i am using a Cisco 1841 with subinterfaces instead (NAT on a stick).From the internet i can access services on public IP being hosted in LAN2. But when i try to access the same services on the same public IPs but sitting on LAN1, it does not work.
This is existing network diagram and find attached file for configuration of Router and L3 Switch:ISP provided 6 Mbps internet access link with ethernet Handoff which is terminated over Cisco 1841.ISP also provided pool of 30 Public ip's 125.63.74.33 /27 , range from 125.63.74.34 to 125.63.74.62.In my current setup, all Inside to ouside traffic going out through 125.63.74.34 public ip because this public-ip NAT overload with Router F0/1 interface.
1) I want to divide 6 Mbps link physically into three parts 2Mbps, 2Mbps, 2Mbps for three VLANs.
2) I want to also configure each vlan IN/OUT traffic with different Public ip. is it possible or not ?
Vlan2 = 172.25.162.0 /24 => Inside to outside / Outside to inside traffic through 125.63.74.40 Vlan3 = 172.25.163.0 /24 => Inside to outside / Outside to inside traffic through 125.63.74.41 Vlan4 = 172.25 164.0 /24 => Inside to outside / Outside to inside traffic through 125.63.74.42
How can i configure above desired setup with CBWFQ
I have a ASA5505 that I need to allow IPSEC and SSL VPNs through. The ASA is connecting to a BT Business ADSL router, what address should I be using on the ASA outside interface that will allow the ASA to be reachable from the Internet?
Is it possible to create a service which will forward public port 9010 to an internal IP address with port 23?First of all, I do not like to open the public Telnet port to the inside so I would use another public port and second my ISP does not allow some public ports beneath port 80?
My company wants to create a VPN Tunnel to allow a remote office to connect to ours. I purchased 2 ASA 5505 and I was expecting to be able to set this up without any issues. Sadly, that is not the case.
What I'm having trouble with is configuring my Public IP Address to the device. I go through the setup wizard and enter the IP Address like normal, but I have no option to input my ISP's subnet, Gateway or DNS. Without those, I get no internet connection. I know there is a way to do this, but I'm stumped.
My Specs:
2 ASA 5505 series ISP Modem (Which they control) - SMC SMCD3GN with DHCP disabled
We will acquire a DSL connection with 5 static public address. How can I use the 5 static public address using a linksys router. Is it depends with linksys router model?
I'm having a weird issue with an ASA 5520 (Ver. 8.2) of a customer. The scenario is as follows:
There is a sub net (on a sub interface) "Guest" which basically is allowed unlimited access to the internet. Traffic is source Na Ted through the ASA to the outside interface. This works fine.
There is on the "inside" interface a server which can be accessed from the outside via a public IP address. On the ASA this is implemented as a static NAT entry. This also works fine.
Now the customer wants to access the server on the inside from a client of the "Guest" interface using the public (Na Ted) IP address. Reason for this is, they have an application with hard programmed IP address inside and want to run some life tests. However, this kind of traffic seems not to be passing through the ASA.
What I have tried so far:
- examined, if a hairpin scenario could be applied here, but it seems not, as I have traffic traveling between interfaces not out and in to the same interface. - enabled the option "enable traffic between two or more interfaces which are configured with same security levels" and also "enable traffic between two or more hosts connected to the same interface" - when I use the real addresses of the host, it works, so it shouldn't be an issue with the firewall rules
So any reason why I cannot use the public NAT address from any of the other interfaces?
I've configured a easy VPN between cisco 3845 and cisco 871 router, 3845 is VPN Server.I am facing problem at client router ie.whenever The public IP address is changed the VPN is disconnecting.
I have 5 workstations with 2 servers but the backup server (black) is shut down intentionally.I have 1 cisco gigabit unmanaged 8 port switch and 1 cisco 1941 vpn router.The cisco 1941 vpn router is configured for IPVPN connection to other branches.
Challenge:
1. Configure NAT to enable the 5 workstations to be connected to the internet thru the router to the ISP. 2. Configure NAT to enable the server to be accessed from outside using the public IP address provided by the ISP. [code]
Verification:
1. I can ping other pc on 10.71.5.0/24 network. 2. When I typed in the ISP's public ip address on the browser, i got into the modem user interface for configuration.
I still can't connect to the internet. When i do tracert, it stops on the 192.168.15.1 hop and didnt continue. This shouldn't be the case since i want to connect using the GE0/1 outside port for the internet.
I need to connect from an inside host to a host located in the DMZ zone for DNS queries. The host in the DMZ zone has a static NAT to the outside. The point now is that I would like to connect from inside to the NATed outside address, means to the public Internet address.
Inside host: 10.0.0.1 -> PAT for 10.0.0.0/8 to 20.0.0.254 (Outside Interface) DMZ host: 192.168.1.1 -> NAT to outside to 20.0.0.1
The traffic should be 10.0.0.1 udp>1024 to 20.0.0.1 udp=53. The source IP address on the outside interface now is 20.0.0.254 (according to the PAT), the destination IP address 20.0.0.1. The DNS reply from 20.0.0.1 should go back now to 20.0.0.254 and then to the inside host 10.0.0.1.
I know that on the PIX it was not possible, to have outgoing traffic on the outside interface which immediately enters again the same interface. Can I realize this scenario with the ASA 8.4(3) release now?
What I'm trying to do seems pretty basic, but I cannot get it working on the RV180?I have 5 Fixed IPs. Using Access Rules I have configured a few inbound rules with specified WAN Destination addresses and these are correctly port forwarding these inbound ports on the specified Public IP addresses. Perfect!
However, for outbound, I need to do the equivalent for one public IP for outgoing SMTP so that our mail servers public facing address is not the standard WAN address and therefore will not fail a reverse DNS lookup. At the moment I have emails bouncing all over the place and panic has set in. I thought the SNAT option was the soltuion, but that just seems to break traffic flow completely on the specified port. I had this working no problem on my old Netgear, but I had to replace it due to throughput limitations.
I have ASA 5505 with basic licence, v9.1, ASDM 7.1. I want to create the DMZ for a web server.
The interface 0 is for the outside network The interface 6 is for the DMZ All other interfaces are for the inside network
My ISP provided me with one public static IP address, one gateway address and a subnet mask 255.255.255.252
1/ I would like to ask which interface I should assign the public static IP address to. Should it be assigned to the outside interface 0, or should it be assigned to the DMZ interface 6, while outside interface would be configured to use DHCP?
I tried to assign the static IP address to the outside interface first, but then when I used ASDM the “Public Servers” feature to configure NAT, I get error message that the outside interface and the public address cannot have the same IP address.
2/ For the sake of peace of mind, I am thinking about using the second firewall, which would be used only for the inside network. Can I connect this second firewall to one of the inside interfaces of the 1st firewall,
My ISP assigns IP's through a standard motorola cable modem via DHCP server. I can pay extra for a persistent IP which uses the MAC of my switch and assigns an IP. Is there a way to get multiple public IP address's from the modem using a switch?For example. Can I plug the modem into the switch and then plug a computer server into the switch and get an IP assigned to that servers MAC address and then also have another server attached to another port on the switch and get a different public IP for that servers MAC address?
I have a i-ball 150M wireless-N ADSL2+ Router device in that , in the NAT tab, i have activated DMZ at my static ip with a private address 192.168.1.224 , so that that ip enabled device can be access to anywhere in public network.I want that using this single static ip , How to configure two private address devices in DMZ, so that both of ip enabled devices can be access in public network.
We have 2 TS (Terminal Servers) and have configured the 1st RDP using my public address (say 8.8.8.8) on port 3389. it is working very well of course. However I need setup my 2nd TS but will use port 7777 on the same public address which is not working.I am using ASDM 6.3 and firmware 8.3.1.Is this a limitation for this IOS?
i'm running a 5510 asa and the vpn has been working great for a while. We recently change our network provider so i had to change the public ip, and dns on the firewall... now i can still connect via the vpn and browse accross my mpls to other sites, but cant really access anything on the native lan that the firewall resides on?
we have two Cisco ASA 5510 in failover configuration.We tried to change the public IP address on the Outside interface of the primary device but it didn't works. The new IP is not reachable from Internet nor pingable from device on the same LAN.The new IP address is in the same subnet of the old IP.
From the switch on which the ASA is connected and from another Cisco PIX we can see the ARP entry. In the analysis, on the old public IP address there was a VPN site-to-site and Webvpn defined.We tried also to shut/no shut the interface and reboot the device.
Will I break anything if I create a second IP address on the physical external interface of our ASA 5510? I want to point it nowhere internally but want an active interface that can be vulnerability scanned but won't lead anywhere internally.
